Run clang-tidy modernize-use-equals-{delete,default} on //cc

See the bugs and cxx post for justification and details:
https://groups.google.com/a/chromium.org/forum/#!topic/cxx/RkOHzIK6Tq8

This change was done using clang-tidy as described here:
https://chromium.googlesource.com/chromium/src/+/lkcr/docs/clang_tidy.md

In some cases the the tool leaves behind a string of commas where it
replaced a member initializer list
(https://bugs.llvm.org/show_bug.cgi?id=35051). They were cleaned up with:
  git diff --name-only | \
    xargs sed -E -i 's/(^\s*|\)\s*):[ ,]*= default/\1 = default/'

BUG=778959,778957

Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
Change-Id: Id90c5a04af42b64ddc7b66984dc2b948f75f6532
Reviewed-on: https://chromium-review.googlesource.com/789719
Reviewed-by: enne <enne@chromium.org>
Commit-Queue: Chris Watkins <watk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521255}

diff --git a/cc/raster/zero_copy_raster_buffer_provider.cc b/cc/raster/zero_copy_raster_buffer_provider.cc
index 194ce14..c4a58851 100644
--- a/cc/raster/zero_copy_raster_buffer_provider.cc
+++ b/cc/raster/zero_copy_raster_buffer_provider.cc

@@ -80,7 +80,7 @@
     : resource_provider_(resource_provider),
       preferred_tile_format_(preferred_tile_format) {}
 
-ZeroCopyRasterBufferProvider::~ZeroCopyRasterBufferProvider() {}
+ZeroCopyRasterBufferProvider::~ZeroCopyRasterBufferProvider() = default;
 
 std::unique_ptr<RasterBuffer>
 ZeroCopyRasterBufferProvider::AcquireBufferForRaster(